<template>
  <div class="department-container">
    <div class="app-container">
      <el-card>
        <!--
          row: 行 ， col： 列
        用一个行列布局 -->
        <el-row type="flex" justify="space-between" align="middle" style="height: 40px">
          <el-col :span="20">
            <svg-icon icon-class="bank" /><span>江苏传智播客教育科技股份有限公司</span>
          </el-col>

          <el-col :span="4">
            <el-row type="flex" justify="end">
              <!-- 两个内容 -->
              <el-col>负责人</el-col>
              <!-- 下拉菜单 element -->
              <el-col>
                <el-dropdown>
                  <span>
                    操作<i class="el-icon-arrow-down" />
                  </span>
                  <el-dropdown-menu slot="dropdown">
                    <el-dropdown-item>添加子部门</el-dropdown-item>
                  </el-dropdown-menu>
                </el-dropdown>
              </el-col>
            </el-row>
          </el-col>
        </el-row>

        <el-tree
          :data="list"
          :default-expand-all="true"
        >
          <!-- 作用域插槽 data拿到的是每一个子节点的对象 -->
          <!--
      什么时候用到作用域插槽？父组件中如果想使用子组件中的数据进行自定义内容的渲染 (类似于table 单元格数据渲染)
    -->
          <template #default="{ data }">
            <el-row
              type="flex"
              justify="space-between"
              align="middle"
              style="height: 40px; width: 100%;"
            >
              <el-col :span="20">
                <span>{{ data.name }}</span>
              </el-col>
              <el-col :span="4">
                <el-row type="flex" justify="end">
                  <!-- 两个内容 -->
                  <el-col>{{ data.manager }}</el-col>
                  <el-col>
                    <!-- 下拉菜单 element -->
                    <el-dropdown>
                      <span> 操作<i class="el-icon-arrow-down" /> </span>
                      <!-- 下拉菜单 -->
                      <el-dropdown-menu slot="dropdown">
                        <el-dropdown-item @click.native="hAdd(data.id)">添加子部门</el-dropdown-item>
                        <el-dropdown-item @click.native="hEdit(data.id)">编辑部门</el-dropdown-item>
                        <el-dropdown-item
                          v-if="data.children.length===0"
                          @click.native="hDel(data.id)"
                        >删除部门</el-dropdown-item>
                      </el-dropdown-menu>
                    </el-dropdown>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-tree>
      </el-card>
    </div>

    <el-dialog
      :title="isEdit ? '修改' : '添加'"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :visible.sync="showDialog"
    >
      <!-- v-if="showDialog" -->
      <addor-eidt
        v-if="showDialog"
        :id="curId"
        :origin-list="originList"
        :is-edit="isEdit"
        @update-depart="hUpdateDepart"
        @close="hClose"
      />
    </el-dialog>
  </div>
</template>

<script>
// 导入api
import { getDepartments, delDepartment } from '@/api/departments'
import AddorEdit from './deptDialog'

import { tranListToTreeData } from '@/utils/index.js'
export default {
  components: {
    'addor-eidt': AddorEdit
  },
  data() {
    return {
      isEdit: false, // 表示当前是否处于编辑
      curId: '', // 当前操作的部门id
      showDialog: false,
      // 依赖一份树形数据
      list: []
    }
  },
  created() {
    this.loadDepartments()
  },
  methods: {
    async loadDepartments() {
      try {
        const res = await getDepartments()
        console.log(res)
        // 由于业务中传智教育的pid是:-1，它是最高级的节点
        // shift 从数组头部取出一个元素
        const root = res.data.depts.shift()
        console.log(root)
        this.originList = res.data.depts.map(({ id, pid, code, name }) => { return { id, name, code, pid } })
        // 用工具函数把 平铺的数组转成 树型数据
        root.children = tranListToTreeData(res.data.depts)
        this.list = [root]
      } catch (err) {
        console.log(err)
      }
    },
    hAdd(id) {
      // 1. 更新当前操作的部门id
      this.curId = id

      // 2. 显示弹层
      this.showDialog = true

      // 3. 更新编辑状态
      this.isEdit = false
    },
    async doDel(id) {
      try {
        const res = await delDepartment(id)
        console.log(res)
        // 1. 提示
        this.$message({ type: 'success', message: '删除成功!' })
        // 2. 更新数据
        this.loadDepartments()
      } catch (err) {
        console.log(err)
        this.$message({ type: 'error', message: '删除失败' })
      }
    },
    hDel(id) {
      this.$confirm('此操作将永久删除部门, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        // 做删除
        this.doDel(id)
      }).catch(() => {

      })
    },
    hEdit(id) {
      // 1. 更新当前操作的部门id
      this.curId = id

      // 2. 显示弹层
      this.showDialog = true

      // 3. 更新编辑状态
      this.isEdit = true
    },
    hUpdateDepart() {
      // 1. 关闭弹层
      this.showDialog = false
      // 2. 更新数据
      this.loadDepartments()
    },
    hClose() {
      this.showDialog = false
    }
  }
}
</script>
